RESPECTED TEACHER,

is the threwshing method done by the machine named thresher?

HOPE SO U WILL ANSWER MY QUESTION.

THANKS

 When we heat a saturated solution the substance will dissolve in water. Also, water gets evaporated in the process of heating. So, if we have a large amount of substance to be dissolved, how is it possible?

 When the saturated solution is heated salt dissolves in it. But if the water is heated for a long time it will get evaporated. So how will we dissolve it?